HOUSTON -- There's still no sign of the son of a Michigan Congressman reported missing in Houston.

Houston Police say 21-year-old Carl Conyers, a UH student, was last seen Tuesday afternoon by his roommate at their apartment in the 3700 block of Southmore.

He is the youngest son of longtime U.S. Representative John Conyers and his wife, Monica.

Monica Conyers flew to Houston from Michigan Thursday afternoon to help with the search.

"This is not like him. If he was going to go somewhere and take a break, which he's never ever done, he would call me," she said. "I've heard nothing from my son. Nothing Period."

Carl Conyers' roommates tell us the last time they saw him Tuesday night, he seemed stressed and said he had a crazy day.

"He was cooking. I greeted him. I noticed he was hiding his face a little bit," said Chat Ball, a roommate. "I didn't think much of it, just because of the fact that school can be hard on a person. Stress is very serious."

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Houston Police say 21-year-old Carl Conyers was last seen Tuesday afternoon by his roommate at their apartment in the 3700 block of Southmore, about a mile southwest of the University of Houston. Family photo

Houston Police say 21-year-old Carl Conyers was last seen Tuesday afternoon by his roommate at their apartment in the 3700 block of Southmore, about a mile southwest of the University of Houston. Family photo

Houston Police say 21-year-old Carl Conyers was last seen Tuesday afternoon by his roommate at their apartment in the 3700 block of Southmore, about a mile southwest of the University of Houston. Family photo

Houston Police say 21-year-old Carl Conyers was last seen Tuesday afternoon by his roommate at their apartment in the 3700 block of Southmore, about a mile southwest of the University of Houston. Family photo

Rep. John Conyers' son reported missing in Houston since Tuesday HPD, family photo

Rep. John Conyers' son reported missing in Houston since Tuesday HPD, family photo

Rep. John Conyers' son reported missing in Houston since Tuesday HPD, family photo

Rep. John Conyers' son reported missing in Houston since Tuesday HPD, family photo

Rep. John Conyers' son reported missing in Houston since Tuesday HPD, family photo